82352221 has 8 divisors (see below), whose sum is σ = 94178304. Its totient is φ = 70541520.

The previous prime is 82352191. The next prime is 82352243. The reversal of 82352221 is 12225328.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82352221 - 2¹⁷ = 82221149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82352021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11991 + ... + 17563.

It is an arithmetic number, because the mean of its divisors is an integer number (11772288).

Almost surely, 2^82352221 is an apocalyptic number.

It is an amenable number.

82352221 is a deficient number, since it is larger than the sum of its proper divisors (11826083).

82352221 is a wasteful number, since it uses less digits than its factorization.

82352221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7691.

The product of its digits is 1920, while the sum is 25.

The square root of 82352221 is about 9074.8124498526. The cubic root of 82352221 is about 435.0692997445.

Adding to 82352221 its reverse (12225328), we get a palindrome (94577549).

It can be divided in two parts, 823522 and 21, that added together give a 7-th power (823543 = 7⁷).

The spelling of 82352221 in words is "eighty-two million, three hundred fifty-two thousand, two hundred twenty-one".